$(document).ready(function () {
  var js = $('aside').find('.javascript');
  console.log(js);
  var details = $('aside').children('details');
  console.log(details);
  var js_parent = js.parent();
  console.log(js_parent);
  var less = $('.less');
  console.log(less);
  var sass = less.next();
  console.log(sass);
  var css = less.prev();
  console.log(css);
  var li = $('li').eq(8);
  console.log(li);
  var php = $('.php');
  console.log(php);
  var lis = php.siblings();
  console.log(lis);
  var allLis = $('li');
  console.log(allLis);
  var python = allLis.filter('.python');
  console.log(python);
  var obj = allLis.filter(function (index) {
    console.log(index);
  });
});
